This paper shows that COVID-19 is associated with a decrease in liquidity and increased pricing efficiency and trading activities before the NYSE closed its trading floor. The closure of the trading floor led to a reduction of liquidity, pricing efficiency, and trading activities on the NYSE....

The implementation of the new revenue recognition standard (ASC 606) has significantly changed the impact of earnings announcements on various measures of market quality and trading activities. In contrast to prior research findings, we show that earning announcements are accompanied by a...